Trimming machine



y 30, 1929- H. E. WILLS 1,722,549

TR IMMING MACHINE Filed May '7, 1925 4 Sheets-Sheet 2 ma 6; ELI M w- July 30, 1929. H. E. WILLS 1,722,549

TRIMMING MACHINE Filed May 1925 4 Sheets-Sheet 5 ATTDRNE'LIS:

July 30, 192$. w s 1,722,549

TRIMMING MACHINE Filed May 1925 4 Sheets-Sheet 4 ATTD plaqs Patented July 3(), 1929.

UNITED stars;

HARRY E. WILLS, OF NORTH 'BROOKFIELD, MASSACHUSETTS.

TBIMMING- MACHINE.

Application filed. May 7, 1925.

In application Serial No. 732,127 I have shown a machine useful particularly in trimming rubber goods such as heels, sheets and the like. The machine described in that application shows among other things two rotary cutters one of which is provided with a shield to protect the operator and also means co-operating with the shield to lubricate the cutter edges as is desirable in cutting rubber goods.

My present invention relates to an improve ment in this lubricating means which not only lubricates the cutters, but also is arranged so that the work table may be lubricated if desired.

In my present drawings I have shown only enough of the machine of said application to show the application of my present invention thereto. In the drawings my invention is shown in its preferred form.

Figure l is a front elevation of the cutters and their supporting means,

Fig. 2 being a side elevation thereof.

3 is an elevation of my improved shield detached, showing also one of the cooks with its relation thereto.

Fig. 11 shows a form of shield adj ustment.

1 is the casing on which is mounted the.

lubricator reservoir 2 with its connections and within which is contained the shafts which project therefrom through bushings 3 and 4, the shaft in bushing 3 carrying the cutter 5 and the shaft in bushing 4 carrying the cutter 6. These cutters are of usual character. 7 is a collar on the bushing 3 and 8 is a collar on the bushing 4, these collars being clamped about their respective bushings by clamping screws 9 1n a usual way. Each shaft carrles 'at its end a screw 10 and the cutters are clamped against the ends of the shafts by nuts 11.

My improved shield is shown at 12. In detail, as shown in Figs. 3, 4, 5, 6, 7 and 11, it comprises a rim 13 grooved on its interior, this groove being of a slightly greater radius than the normal radius of the cutter so that it will clear the cutter. Its rear portion ex- Serial No. 28,565.

tends downward somewhat so as to protect the back of the cutter and so that it may have cast within it a pocket 15. At the lower end of this pocket 15 and connected thereto is a chamber 16 in which is carried a wiper comprising a piece of felt or wick or other lubricant-absorbing material. I

This shield also carries a lug 18 projecting from one side of it and having a slot 19 therein by means of which and a screw 20 it may be attached to a corresponding lug 180 on the collar 7. Thisslot allows the shield to be properly adjusted so that as the cutter is ground down the shield may be adjusted to bring its lower grooved portion 120 near the edge of the cutter to act as a guard. Compare Fig. 1 where a large cutter is used with ig. 11 where a smaller cutter is shown, To supply lubricant to the cutter I provide a tank 2, as in the machine of my said,

' patent application, which tank has connected with its lower end a pipe 21. The end of this pipe is closed by a plug 22 so that, the plug being removed, the interior of the pipe may I be swabbed out if necessary. From this pipe extends at right angles thereto a pipe 23 which comes forward over the cutters and is also plugged at its end by a plug 24. 25 is a screw which passes down through the pipe and is slightly beveled as at 26 so that it may 1 serve as a drip cock and allow an adjustable 1 opening for the lubricant in the pipe 23. In

operation the lubricant drips through what ever opening may be left by the adjustment of the screw 25. This drip cock as shown in Fig. 3 is located over the pocket 15 in the H shi ld so that the lubricantin dropping from pocket 15 where it will be absorbed by the wick 17. This wick 17, as will be seen from Fig. 7, is so placed as to bear against an edge of the cutter 5.

the end of the screw 25 will drop into the By preference, also, I provide a second sim ilar screw 27 like the screw 25 passing in like manner through the pipe 23 and located so that if properly adjusted the work or work table may be lubricated, so that the work may be more readily moved on the table. In some classes of work this is very desirable..

Another way of lubricating the table and the work is shown in Figs. 8, 9 and 10. In this case I provide the table 28 with a pocket 29 attached to its under side in any convenient manner. The table above the pocket isprovided with perforations 30 and in the pocket is placed .a piece of felt or wick or the like 31 to act as an absorbent. This pocket is connected by a suitable coupling 32 with a flexible pipe 33 preferably of metal of any usual construction which is connected by a coupling 34 with the pipe 21 or any other 111- bricant source, the entrance to the pipe being controlled by a suitable screw or valve 35. It will be seen that by opening the valve 35 the lubricant will flow down the pipe 33 and keep the absorbent 31 saturated so that the lubricant will ooze out of the openings 30 and quickly spread over the upper surface of the table. The pocket 29 may be of any de sired shape and may run crosswise of the table as shown in Fig. 8 or lengthwise thereof as shown in F ig. 10.

The lubrication of the table to allow the a work to be moved easily across it I believe is new with me and may of course be other Wise accomplished, and lubricating it from below is I find a great advantage.

I have not described the other parts shown :inthe drawing as they and their purpose are fully described in my said application. Nor do I mean to limit myself to the particular form of my invention herein described as it may be otherwise embodied. The lubricant to be used will depend upon the work to be done. In rubber work for which my machine is especially designed water is often used and would come within my definition of lubricant.

I have shown at 35 a clip having a pad 36 V at its lower end and attached to the screw 24%.

This clip has its lateral edges bent upward to form a gutter and it is located under the screw 27 so that the lubricator will drip on to the clip and be carried down to the pad 36 so that the front of the knife against which it rests will be lubricated if desired. This clip is removable but if used will protect. the work from lubrication.

WhatI claim as my invention is 1. In a machine of the kind described, a rotary disc cutter a shield located to protect the edge of said cutter, a wiper and means connected to said shield for supporting it in contact with said cutter, a lubricant supply, and means for supplying lubricant therefrom to said wiper, said supplying means comprising a reservoir having a pipe leading therefrom, said pipe having a drip cook 10- vcated to feed the lubricant to said wiper.

2. In a machine of the kind described comprising a rotary cutter, a shield partly enclosing the cutting edge of said cutter, a wiper supported by said shield in contact with said cutter, and a lubricant feed adapted to feed lubricant to said wiper.

3. In a machine of the kind described having a rotary cutter, a shield partly enclosing said cutter and having a pocket in its upper portion and carrying a wiper in communication with said pocket, and means for feeding a lubricant into said pocket to be absorbed by said wiper.

4. In a machine of the kind described,-a work table having a pocket in its under side adapted to contain a lubricant, an absorbent located in said pocket, said table being perforated over said absorbent, whereby said lubricant may pass to the surface of the table, and means for feeding a lubricant to said. absorbent.

5. In a machine of the kind described, a tank, a rotary cutter and work table, a wiper supported in contact with the cutter and an absorbent supported under said table, and means leading from said tank into proximity with said wiper and said absorbent whereby lubricant will be fed from said tank to said wiper and said absorbent.

6. In a machine of the kinc described, a tank carrying a lubricant, a rotary disk cutter, a shield partially surrounding the edge of said cutter and carrying a wiper in con tact with said cutter, and means comprising a pipe leading from said. tank and carrying a drip cock located over said wiper whereby said lubricant will be fed to said wiper in adjustable quantity. 1

7. In a machineof the kind described, a tank carrying a lubricant, a rotary disk cutter, means comprising a pipe leading from said tank and having drip cocks therein whereby a variable amount of lubricant may be delivered therefrom, means for engaging both sides of said cutter. and means for directing lubricant from said tank to said outter-engaging means.

8. In a machine of the kind described, a tank, a pipe leading therefrom, cutter. a wiper, and means for supporting it in con tactwith a side of said cutter, an opening in said pipe above said wiper, and an artistable drip cockcontrolling said opening with the edge of said cutter, and said shield having located therein a holder for a wiper of absorbent material adapted to engage the surface of said cutter. and means for feeding lubricant to said wiper.

HARRY n. WILLS. 

